ive been running the track with some people that have modded grp's and rb's.
on there truggys getting like 14 minutes on a tank at 112 degrees. i hate them i need to get mine done. i will talk to them and get you a number or website if you wanted your engine done.

i just got a truggy with a modded 427, im just wondering what there doing to them, im new to the whole nitro thing. also wondering if i should be doing anything different for them then i would a normal motor.

There are many mods you can do to a motor to change the characteristics of it. Some people mod cranks and timing durations. Some people do the sleeve porting and backplate mods to gain better flow at high RPMs. Some people do it all...! LOL

Here is a crank I did a while back on a C6BBT7... was the fastest motor Ive owned. Also had an aggressive port job.

A modified motor means, its been worked. Most common work is sleeve and crank work. Modifications should increase flow and packing.

The end result should be an engine with a very smooth/linear powerband. Rather than having all the power in a narrow powerband, you should have a bit wider powerband.

Thats if its done right. The 427 is very good example of an engine with some modding becomes an excellent engine. We've been modding those for over a year and produce a very strong running engine. The only downside to the 427 modded or not is it doesn't like to be run too hot and its lasts about 4ish gallons......